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Finding the Fourth Proportional to 665,801.46, 918,810.18 and 359,877.21

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Solution

The fourth proportional to 665,801.46, 918,810.18 and 359,877.21 is: 496,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,801.46 : 918,810.18 = 359,877.21 : x
  2. Step 2: Convert to fraction form
    665,801.46/918,810.18 = 359,877.21/x
  3. Step 3: Cross multiply
    665,801.46x = 918,810.18 × 359,877.21
  4. Step 4: Simplify right side
    665,801.46x = 330,658,844,098.00
  5. Step 5: Solve for x
    x = 330,658,844,098.00/665,801.46
  6. Step 6: Final answer
    x = 496,632.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.